I am going to use the camera for fast focusing sport action , where I will move very fast from 1 object to another when I take videos, with no zoom at all.I would like,if it is possible, that the camera will take almost nothing to refocus on the other object .

Also I need that after I take my videos, I add slow motion, but I would like that the slow motion of the movie , does not give grainy videos.

I think the way you are describing your filming... probably any of them will do. But if you intend on slowing down motion, i'd say HD1000 just because you can record at 60 frames per second. The rest can only do 30fps.

Yes , I would like to edit my videos and make them at slowing down motion , but a friend told me that high definition sd camcorder , are not gfood for making slow motion , because they looks grainy and pixelated in comparison to minidv camcorder.

Thank u guys, reguarding the sanyo cameras tht I pointed u , which one will give a crisp slow motion and a fast focusing for sport action??

REguarding the sanyo1000 , the onlu thing that I do not like is the hude lens diameter that has in comparison with the otre smallest sanyo taht I wrote.

Will the 60ftps a much move convenience for me??

Also, will it be possible for me to attach a lens converter to the sanyo 1000 lens??

thank u

if you intend on slowing down motion.... i'm assuming you will do it in one of two ways:

1) simply slowing down the frames per second speed.
2) software interpolating frames to create a smooth looking slow speed.

Both of which will benefit from having 60 frames per second. Slowing down 60 frames per second will look better than slowing down 30 fps. and having 60 fps simply gives you more reference points if you want to use software interpolated slow down.

HD1000 also have a 40.5mm lens thread, and step up converter threads are available at camera stores. I'm not sure any of the smaller lens cameras you listed has that option.